The Robins are busy experimenting with Simple Machines and are proud to display their hard work at The Simple Machine Expo this month! Simple Machines make work easier and include the Lever, Wheel & Axle, Pulley, Inclined Plane, Wedge and Screw. Students are discovering the science behind catapults, balance boards, flag poles, roller coasters, balance scales, seesaws and more. Simple Machines are everywhere – just ask a GPS Kindergartner!